Update ChangeLog.md

Author: baselmicrosoft

src/Sql/Sql/ChangeLog.md

@@ -20,6 +20,7 @@
 ## Upcoming Release
 * Add readable secondary parameter to Invoke-AzureSqlDatabaseFailover
 * Add cmdlet Disable-AzSqlServerActiveDirectoryOnlyAuthentication
+* Save sensitivity rank when classifying columns in the database.
 
 ## Version 2.4.0
 * Added PublicNetworkAccess to `New-AzSqlServer` and `Set-AzSqlServer`